
Monitored Digital Input Modules
, Type F (T7411F, T7418F)
12
Industrial Control Services
Figure
7
shows a single switch connected to a redundant
monitored input modules. This type of configuration
uses a
line monitor device which contains two zener diodes, one in
series with the field switch and one in parallel with the field
switch.
Figure
7
. Line Monitoring, Single Switch Connected to
Redundant Modules.
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